nixos/greetd: Add greetd module (#118294)
* nixos/greetd: Add greetd module * nixos/greetd: Configure 'greeter'-user * nixos/greetd: Add default for restart-option Co-authored-by: Jens Nolte <git@queezle.net>wip/yesman
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c0b9713178
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{ config, lib, pkgs, ... }: |
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with lib; |
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let |
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cfg = config.services.greetd; |
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tty = "tty${toString cfg.vt}"; |
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settingsFormat = pkgs.formats.toml {}; |
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in |
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{ |
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options.services.greetd = { |
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enable = mkEnableOption "greetd"; |
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package = mkOption { |
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type = types.package; |
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default = pkgs.greetd.greetd; |
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defaultText = "pkgs.greetd.greetd"; |
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description = "The greetd package that should be used."; |
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}; |
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settings = mkOption { |
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type = settingsFormat.type; |
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example = literalExample '' |
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{ |
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default_session = { |
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command = "''${pkgs.greetd.greetd}/bin/agreety --cmd sway"; |
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}; |
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} |
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''; |
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description = '' |
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greetd configuration (<link xlink:href="https://man.sr.ht/~kennylevinsen/greetd/">documentation</link>) |
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as a Nix attribute set. |
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''; |
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}; |
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vt = mkOption { |
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type = types.int; |
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default = 1; |
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description = '' |
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The virtual console (tty) that greetd should use. This option also disables getty on that tty. |
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''; |
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}; |
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restart = mkOption { |
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type = types.bool; |
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default = !(cfg.settings ? initial_session); |
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defaultText = "!(config.services.greetd.settings ? initial_session)"; |
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description = '' |
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Wether to restart greetd when it terminates (e.g. on failure). |
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This is usually desirable so a user can always log in, but should be disabled when using 'settings.initial_session' (autologin), |
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because every greetd restart will trigger the autologin again. |
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''; |
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}; |
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}; |
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config = mkIf cfg.enable { |
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services.greetd.settings.terminal.vt = mkDefault cfg.vt; |
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services.greetd.settings.default_session = mkDefault "greeter"; |
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security.pam.services.greetd = { |
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allowNullPassword = true; |
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startSession = true; |
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}; |
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# This prevents nixos-rebuild from killing greetd by activating getty again |
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systemd.services."autovt@${tty}".enable = false; |
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systemd.services.greetd = { |
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unitConfig = { |
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Wants = [ |
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"systemd-user-sessions.service" |
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]; |
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After = [ |
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"systemd-user-sessions.service" |
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"plymouth-quit-wait.service" |
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"getty@${tty}.service" |
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]; |
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Conflicts = [ |
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"getty@${tty}.service" |
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]; |
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}; |
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serviceConfig = { |
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ExecStart = "${pkgs.greetd.greetd}/bin/greetd --config ${settingsFormat.generate "greetd.toml" cfg.settings}"; |
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Restart = mkIf cfg.restart "always"; |
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# Defaults from greetd upstream configuration |
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IgnoreSIGPIPE = false; |
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SendSIGHUP = true; |
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TimeoutStopSec = "30s"; |
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KeyringMode = "shared"; |
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}; |
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# Don't kill a user session when using nixos-rebuild |
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restartIfChanged = false; |
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wantedBy = [ "graphical.target" ]; |
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}; |
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systemd.defaultUnit = "graphical.target"; |
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users.users.greeter.isSystemUser = true; |
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}; |
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meta.maintainers = with maintainers; [ queezle ]; |
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} |
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